Water-trap.



W. I. STAAF.

WATER TRAP.

APPLICATION FILED MAR.21, 1912.

Patented 0011.21, 1913.

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ammo stares rarer easies 1. -.-S:.[ AAF, DI PITTSBURGH, PENNSYLVANIA, ASSIGNORQOF To EDWARD LB. TYLER, PITTSBURGH, PENNSYLVANTA.

immerse?- To all whom it maygcoacem Be it known that I, WE E I. STAAF, aj

resident of Pittsburgh, Allegheny county, Pennsylvania, have invented a new and useful Water-Trap, of which the following is a full, clear, and exact description, reference I being had to the accompany ng drawings,

sp e fi t n, 1n

forming part of this wh1ch I Figure 1 15 21 vertical longitudlnalsectlon through a water trap embodying my inven- $10K} F1g. 2 1s a plan VlGW SllOWlll-gitll valve parts; Fig. 3 is a plan view of the diaphragm ,member; ,4 is a sectional View of the same.

A further object of the invention is to provide means for insuring that the valve: shall be held open until the trap is practi-i cally emptied of its contents, and thiis prevent wire-drawing at the valve.

The nature of my invention will be best understood by reference to the accompanying drawings, in which I have shown the preferred embodiment thereof, and which will now be described, it being premised, however, that various changes can be made in the details of construction and arrange ment of the several parts without departing from the spirit and scope of my invention as defined in the appended claims.

In these drawings, the numeral 2 designates the trap vessel, which is provided with the removable cover 3, and which has the inlet pipe t. This pipe 4 preferably leads downwardly within the trap vessel to a point near the bottom thereof.

5 designates the outlet connection, which is preferably located in one of the lower corner portions of the vessel. This connection is shown as consisting of a hollow cye lindrical plug, screw-threaded in an oblique position within a suitable seat 6, and having its inner end portion contracted and transversely elongated to form a narrow discharge orifice 7. The walls of this orifice are slightly concaved to seat the convex face of a valve 8. This valve is shown as being carried by arms 9 extending from a hub 10, which is loosely sleeved on a shaft 11.

Specification of .LettersIatQnt.

"Application filed March 31, 1912. Serial No. 685,316.

Batentedflct. 21, 1913.

l is a float, h ving an ar l eou et ,to the shaft 11 The'hub member is" slotted ,or cut away to form shoulders 18 for engagement' with pins l l carrie'd by saidshaft,

said shouldersand pins forming a clutch connection ;-between the float-operated shaft and the hllbof the valve. The shaft 11 is ,journaled in the lug :15, which is secured toadiaph ragm 16 supported in a frame 17, which is shown as secured to a bracket arm 18 attachedto the outlet plug 5. The effective a-re'aof thediaphragm 1 6 is, equal toor slightly greater than the area of the valve which is" exposed to the water pressure with- ,in the trap. In this manner the valve isv balanced by the opposing pressuresthereon and on thediaphragm, so that it can open freely notwithstanding the pressure of the water in the trap.

When in its lOWered positiomthe float 12 extends'into a receptacle 19 placed within the float chamber, and having one or more relatively small perforations 20in its-bottom wall. By reason of this receptacle, after the valve has been opened, and the float commences to fall, a considerable amount of water will be retained in the receptacle 19, since the only means of escape of such water is through the relatively small perforations 20. The Water in this receptacle will, therefore, prevent the sudden return of the fioat to its lowermost position, and will hold the float sufficiently elevated to keep the outlet valve opened until such time as substantially all the water has drained out through the perforations 20. This permits the discharge of substantially all the water contained in the vessel.

Without the provision of the device just described, the valve would close before all the water had escaped from the trap and a slight increase in the amount of water would start to open the valve, this operation being repeated indefinitely. By the provision of the receptacle and escape opening, together with the clutch connection be- I The advantages of my invention result from the provision of the simple and effiolent means for balancing the valve in the manner described, and also from the provision of means for insuring the valve being held open until substantially all the water has been discharged.

That I claim is 1. A trap having a discharge opening, a pivoted valve for controlling said opening, a diaphragm member to which the valve is pivoted, and an actuating float connected to the valve to swing it on its pivot; substantially as described.

2. A trap having a discharge opening, a diaphragm within the trap opposite the said opening, an oscillating valve pivoted to the diaphragm, and a float connected to the valve pivot, substantially as described.

3. A trap having a discharge opening, a diaphragm supported within the trap opposite the said opening, a valve pivoted to the diaphragm, and a float having a clutch connection with the pivot of the valve, substantially as described.

4. A trap having an outlet opening, a diaphragm within the trap opposite the opening, said diaphragm having one of its surfaces exposed to the pressure of the liquid within the trap, and a valve pivoted to the diaphragm, said valve having an exposed area substantially equal to the area of the exposed portion of the diaphragm, substantially as described.

5. A trap having a discharge opening, a

diaphragm opposite the said opening, a valve pivoted to the diaphragm, a float having a clutch connection with the pivot of the valve, and a receptacle for receiving and stopping the float in its lowermost position, said receptacle having an escape opening in its bottom, substantially as described.

6. A trap having a discharge opening, a pivoted valve for controlling said opening, a diaphragm member to which the valve is pivoted, an actuating float connected to the valve to swing it on its pivot, and means for retarding the fall of the float; substantially as described.

7. A trap having a discharge opening formed with concave valve seating edges, a pivoted valve for controlling said opening, and a diaphragm member to which the valve is pivoted, said valve being movable transversely of the said opening and having a curved seatlng face, together with means for oscillating the valve; substantially'as described.

In testimony whereof, I have hereunto set my hand.

\VERNER I. STAAF.

l/Vitnesses:

H. M. CoRwIN, GEO. H. PARMELEE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. G. 

